In terms of armor... you're choices are very open... I find that using silks of the victor is pretty good because of the mana bonuses it gives you. When using lightning fury there's a lot of mana flying around in those bolts. Other than that i have no clue what other armor you should wear, because i'm pretty poor too. It might take a while to find something that suits you... try doing nightmare pindleskin with lightning fury you might find yourself something good to start trading stuff.

nahhhh mate.
it really depends on what you want in your armour,
if you need resists......... nef lum smoke 50 res all
a bit better................ lionheart 30 res all about 20 to all stats
ias............... upgraded twitch or crow caw with 2 ias jewels
mf..............skulders, and the +1 to skills helps a little.
anything with life, resists, stats or ias can be helpful
the javazon is so flexible in what you can use it's just great.
if you are going the ias route because your lighting aswel it could help
maybe if your rich you could even use 4 light facet jewels in an armour.
shaft could also be handy
but remember defense on the armour really doesnt matter when it comes to lighting javazon
i personally recommend the lionheart for cost effectivness